Gas Recirculation Valve (egr Valve) problems of the 2016 Ford F-150

Hill descent control fault/ service advancetrac warning suddenly turned on. Alternated w service light. But I was just driving home from work on a 70 degree day on a dry paved road decelerating from a 40mph zone to a 30 mph zone up a slight incline. I wasn't using hill descent and traction was fine. The disturbing part was the vehicle suddenly ran rough and had no power. I could not get it to run well enough pull it over out of the traffic lane. An on off cycle returned function for a few seconds and I got around the corner before the fault occurred again. With no hills the last block I got to my driveway where a longer off period returned the vehicle to function. This type of sudden power loss could cause an accident.

While vehicle was in motion. Operating ok and then engine started to shudder and continued to do so. Weather was clear 75 degrees and sun shine. - engine light is on. Ecoboost engine with 4,200 miles. I turned the ac off still shudders. This has gone on now for 3 days. I am taking do dealer tomorrow 28nov2016.

2016 Ford F-150 XLT 2. 7l ecoboost automatic model with approximately 3,400 miles. Had already driven about 4-5 miles with engine already warmed up. Dry weather and about 69 degrees f outside. Came up to stop light with other vehicles ahead slowed down. Came to a complete stop and the auto-stop function engaged and the engine shut off. The roadway was fairly level. Waited approximately 20-30 seconds until light turned green. Traffic ahead started to move forward. I let off the brakes and the auto-start engaged. I continued to ease off brakes and allowed the truck to roll and idle forward with the flow of the vehicles ahead. I then applied my foot on the accelerator and began accelerating with the flow of the traffic. All of a sudden, the engine shuts off. At first I didn't realize it had shut off and was surprised that I wasn't able to accelerate anymore. Then I looked at instrument panel and saw that the speedometer was reading 17 mph and slowly dropping as the truck was just coasting along. My first thought was that maybe I had accidentally thrown it into neutral somehow, but the gear was still in "d" and applying gas did not move the tachometer as it had dropped to zero. Then I saw the battery symbol pop up. This is when I realized the engine had shut off during acceleration, possibly during gear shift sequence. At this point the vehicle is still rolling roughly 10 mph, so I engage it into neutral and crank the ignition and it starts up again. There is traffic behind me at this point so I change gear into "d" and am then able to accelerate normally up to proper speed. I could not recreate this again for the next 5-6 miles home, even with numerous stop lights where I would recreate the same auto-stop/start and accelerate actions.